CN110844813A - Hoisting apparatus and method - Google Patents

Hoisting apparatus and method Download PDF

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Publication number
CN110844813A
CN110844813A CN201911135294.8A CN201911135294A CN110844813A CN 110844813 A CN110844813 A CN 110844813A CN 201911135294 A CN201911135294 A CN 201911135294A CN 110844813 A CN110844813 A CN 110844813A
Authority
CN
China
Prior art keywords
rope
hoisting
reel
force
drum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911135294.8A
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Chinese (zh)
Inventor
张响
黎晓强
何斌衡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sany Automobile Hoisting Machinery Co Ltd
Original Assignee
Sany Automobile Hoisting Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sany Automobile Hoisting Machinery Co Ltd filed Critical Sany Automobile Hoisting Machinery Co Ltd
Priority to CN201911135294.8A priority Critical patent/CN110844813A/en
Publication of CN110844813A publication Critical patent/CN110844813A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/44—Jib-cranes adapted for attachment to standard vehicles, e.g. agricultural tractors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/40—Control devices
    • B66D1/48—Control devices automatic
    • B66D1/50—Control devices automatic for maintaining predetermined rope, cable, or chain tension, e.g. in ropes or cables for towing craft, in chains for anchors; Warping or mooring winch-cable tension control

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

The embodiment of the invention provides hoisting equipment and a method, and relates to the field of cranes. The hoisting equipment can effectively reduce the probability of rope sinking of the winch.

Description

Hoisting apparatus and method
Technical Field
The invention relates to the field of cranes, in particular to hoisting equipment and a hoisting method.
Background
In the fan overhaul working condition, the fan needs to be hoisted to the ground from high altitude by using a crane for overhaul. However, in the prior art, when a winch on a crane hoists a fan, the problem of rope sinking is easily caused, and the normal operation of hoisting operation is affected.
Disclosure of Invention
The object of the invention consists, for example, in providing a hoisting device which is effective in reducing the probability of rope-sinking problems in winches.
The invention also provides a hoisting method, which can reduce the probability of rope sinking of a winch when hoisting operation is carried out by the hoisting method.
Embodiments of the invention may be implemented as follows:
in a first aspect, an embodiment provides a hoisting apparatus, which includes a first hoisting machine and a pre-tightening device, where the first hoisting machine includes a first reel and a first rope, the first rope is wound around the first reel, the pre-tightening device is connected to the first rope, and the pre-tightening device is configured to apply a pre-tightening force to the first rope before the first rope hoists a preset object, where the pre-tightening force is the same as a direction of a load force of the first rope by the preset object.
In an alternative embodiment, the pretensioning device is a second winch, and the pretensioning device includes a second drum and a second rope, the second rope is wound on the second drum, a free end of the second rope is connected with a free end of the first rope, and the second drum is configured to apply the pretensioning force to the first rope through the second rope.
In an alternative embodiment, the number of rope portions of the second rope wound around the second drum is one or two in the length direction of the second drum.
In an alternative embodiment, the second rope is detachably connected to the second reel, and the second rope is used for being fixed to the second reel before the first rope acts on the preset object; and the second rope is used for being disengaged from the second winding drum after the first rope acts on the preset object.
In an optional embodiment, the hoisting device further includes a hook, the hook is fixedly connected to the free end of the first rope, and the free end of the second rope is hung on the hook.
In an alternative embodiment, the lifting device further comprises a support table, the second drum being rotatably connected to the support table.
In an alternative embodiment, the second rope is a fiber rope.
In an alternative embodiment, the hoisting device further comprises a lift truck and a hanger coupled to the lift truck, the first reel is rotatably coupled to the lift truck, the first rope is coupled to the hanger, and the first rope extends in the same direction as the height direction of the hanger.
In a second aspect, embodiments provide a lifting method using the lifting apparatus of any one of the preceding embodiments, the lifting method comprising:
causing the pretensioning device to apply the pretensioning force to the first rope;
and enabling the first rope to hoist the preset object.
In an alternative embodiment, between the step of causing the pretensioning device to apply the pretensioning force to the first rope and the step of causing the first rope to hoist the preset object, the method further comprises:
and enabling the first winch to apply a driving force opposite to the pretightening force direction to the first rope, so that the free end of the first rope rises to a position corresponding to the preset object.
The beneficial effects of the embodiment of the invention include, for example:
the embodiment of the invention provides hoisting equipment, and the inventor researches and discovers that when a preset object is directly hoisted by a first rope, under the sudden action of the preset object, the part of the first rope wound on an upper layer of a first winding drum is easy to fall into the rope sections of the first rope on a lower layer, so that the rope falling phenomenon is caused, and the hoisting operation is influenced. According to the pre-tightening device in the hoisting equipment, provided by the embodiment of the invention, the pre-tightening force can be applied to the first rope before the first rope hoists the preset object, so that the first rope can be changed into a tight state from a loose state before hoisting. Like this, when the object was predetermine in first rope hoist and mount, the first rope of winding on first reel has been in the tight state, is difficult to appear sinking the rope problem to can effectually reduce the probability that the rope problem falls into in first winch.
The embodiment of the invention also provides a hoisting method, and by using the hoisting equipment, the pretightening device applies pretightening force to the first rope before the first rope hoists the preset object, so that the probability of rope sinking of the first winch can be effectively reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a hoisting device according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
FIG. 3 is an enlarged schematic view at B of FIG. 1;
FIG. 4 is a schematic diagram of a second rope wound around a second drum according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of a hoisting method according to an embodiment of the present invention.
Icon: 1-hoisting equipment; 11-a first winch; 111-a first reel; 112-a first rope; 12-a pre-tightening device; 121-a second reel; 122-a second rope; 13-a hook; 14-a support table; 15-crane vehicle; 16-hanger.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of describing the present invention and simplifying the description, but the indication or suggestion that the device or the element to be referred must have a specific orientation, be constructed in a specific orientation and be operated, and thus, the present invention cannot be understood as being limited.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Referring to fig. 1 to 3, the present embodiment provides a hoisting apparatus 1, where the hoisting apparatus 1 includes a first winch 11, the first winch 11 includes a first reel 111 and a first rope 112, the first rope 112 is wound on the first reel 111, and the first rope 112 is used for hoisting a predetermined object.
It should be noted that, in this embodiment, the preset object is a fan in a wind turbine generator system. In the maintenance operating mode of fan, the staff need use first rope 112 will predetermine the object and tie up the back tightly, start first winch 11, will predetermine the object and hoist to ground from aerial, then overhaul predetermineeing the object. The inventor researches and discovers that when the gravity of a preset object suddenly acts on the first rope 112, the first rope 112 is suddenly tensioned from a loose state, and the first rope 112 wound on the first reel 111 is easy to have a rope sinking problem, so that the whole hoisting operation is affected.
It should be noted that, in this embodiment, the rope trapping problem refers to: in actual use, the first reel 111 is wound with a plurality of layers of the first rope 112, and when the first rope 112 is suddenly acted by the gravity of a preset object, a part of the rope segment of the upper layer of the first rope 112 wound on the first reel 111 is trapped between two adjacent rope segments of the lower layer of the first rope 112. It will be appreciated that the rope trapping problem increases the wear of the first rope 112 itself and also significantly affects the hoisting operation.
The inventor has found that the main reason for the rope trapping problem is that the first rope 112 wound on the first reel 111 is in a loose state before hoisting the preset object, and when the first rope 112 is suddenly pulled, the rope trapping problem is easily caused. To this end, the inventors have added a pretensioning device 12, thereby reducing the probability of rope-trapping.
Specifically, referring to fig. 1 to fig. 3, in this embodiment, the hoisting apparatus 1 further includes a pre-tightening device 12, the pre-tightening device 12 is connected to the first rope 112, and the pre-tightening device 12 is configured to apply a pre-tightening force to the first rope 112 before the first rope 112 hoists the preset object, where the pre-tightening force is the same as a direction of a load force of the preset object to the first rope 112.
It will be appreciated that the pretensioning device 12 applies a pretensioning force to the first rope 112 to cause the first rope 112 to change from a loose state to a taut state prior to hoisting. Thus, when the first rope 112 hoists the preset object, the first rope 112 wound on the first reel 111 is already in a tight state, and the rope sinking problem is not easy to occur.
It should be noted that, referring to fig. 1 to fig. 3, in this embodiment, the pretensioning device 12 is a second winch, specifically, the pretensioning device 12 includes a second winding drum 121 and a second rope 122, the second rope 122 is wound on the second winding drum 121, a free end of the second rope 122 is connected with a free end of the first rope 112, and the second winding drum 121 is configured to apply a pretensioning force to the first rope 112 through the second rope 122.
It is understood that the pretensioning device 12 includes a second driving motor (not shown), a transmission shaft of the second driving motor is used for driving the second winding drum 121 to rotate, and the second driving motor can apply a torsion force to the second winding drum 121, so that the second winding drum 121 can apply a pretension force to the first rope 112 through the second rope 122.
It should be noted that, in the present embodiment, the first winch 11 includes a first driving motor (not shown), and when the pretensioning device 12 applies a pretensioning force to the first rope 112, the first driving motor applies a braking force to the first rope 112 through the first reel 111, which is opposite to the pretensioning force, so that the first rope 112 can be sufficiently tightened.
Of course, in other embodiments, the first driving motor may not be activated, the pretightening force is equal to the friction force between the first rope 112 and the first reel 111, and the first rope 112 may be in a relatively tight state.
It should be noted that in other embodiments, the pretensioning device 12 can also be a hydraulic press, which can also apply pretensioning force to the first rope 112.
Referring to fig. 4, in the present embodiment, the number of the rope segments of the second rope 122 wound on the second reel 121 in the length direction (left-right direction in fig. 4) of the second reel 121 is two.
It can be understood that, by such an arrangement, the probability of the second rope 122 getting stuck on the second reel 121 can be effectively reduced.
Of course, in other embodiments, the number of rope segments of the second rope 122 wound on the second reel 121 in the length direction of the second reel 121 may be one.
Referring to fig. 3, in the present embodiment, the hoisting device 1 further includes a hook 13, the hook 13 is fixedly connected to the free end of the first rope 112, and the free end of the second rope 122 is hung on the hook 13. Thus, the second rope 122 can be conveniently installed and separated from the first rope 112, and the working efficiency is improved.
It should be noted that, in the present embodiment, the second rope 122 is detachably connected to the second reel 121, and the second rope 122 is used to be fixed to the second reel 121 before the first rope 112 acts on the preset object. And, the second string 122 is used to be detached from the second reel 121 after the first string 112 acts on the preset object.
Referring to fig. 3 in combination with fig. 1, in this embodiment, the pre-tightening device 12 is disposed on the ground, the free end of the first rope 112 needs to be lowered to a position close to the ground first, so that the worker can hang the second rope 122 on the hook 13 conveniently, then, under the action of the first driving motor of the first winch 11, the free end of the first rope 112 is raised to a position corresponding to the preset object, the first rope 112 tightens the preset object, and then the second rope 122 is disengaged from the second reel 121. In this way, the second reel 121 does not hinder subsequent hoisting work, and the second rope 122 disengaged from the second reel 121 can be bound to the predetermined object to assist the hoisting work of the predetermined object.
Specifically, in the present embodiment, the second rope 122 is a fiber rope. It is comparatively soft, can regard as the hawser to use, and the better binding of being convenient for predetermines the object.
Referring to fig. 1 and 2, in the present embodiment, the lifting apparatus 1 further includes a lifting car 15 and a hanger 16 connected to the lifting car 15, the first reel 111 is rotatably connected to the lifting car 15, the first rope 112 is connected to the hanger 16, and the extending direction of the first rope 112 is the same as the height direction of the hanger 16.
It will be appreciated that the lifting apparatus 1 is capable of performing lifting operations on predetermined objects at various locations under the influence of the lift truck 15.
Referring to fig. 3, in the present embodiment, the lifting apparatus 1 further includes a support platform 14, and the second drum 121 is rotatably connected to the support platform 14. It will be appreciated that in this embodiment, the first drive motor and the second drum 121 are both disposed on the support table 14, facilitating the installation and handling of the first drive motor and the second drum 121.
Referring to fig. 5, the present embodiment further provides a hoisting method using the hoisting apparatus 1 mentioned above, where the hoisting method includes:
s31: causing pretensioning device 12 to apply pretensioning force to first rope 112;
s34: the first rope 112 is made to hoist the preset object.
It can be understood that, in this embodiment, the direction of the pre-tightening force is the same as the direction of the pre-set object pulling force on the first rope 112, so that the first rope 112 can be changed from a loose state to a tight state before hoisting, and the rope trapping problem is not easy to occur.
Referring to fig. 5 in combination with fig. 1, in this embodiment, between the step of applying the pretensioning force to the first rope 112 by the pretensioning device 12 and the step of hoisting the preset object by the first rope 112, the hoisting method further includes:
s32: the first winch 11 applies a driving force opposite to the pretightening force direction to the first rope 112, so that the free end of the first rope 112 is lifted to a position corresponding to the preset object.
Thus, the first rope 112 can conveniently bind and hoist the preset object.
Referring to fig. 5, between the step of causing the first winch 11 to apply a driving force opposite to the pretightening force direction to the first rope 112 so as to raise the free end of the first rope 112 to a position corresponding to the preset object and the step of causing the first rope 112 to hoist the preset object, the hoisting method further includes:
s33: the second rope 122 is disengaged from the second reel 121.
In this way, the second reel 121 does not affect the hoisting operation of the first rope 112, and the second rope 122 separated from the second reel 121 can bind the predetermined object to assist in hoisting the predetermined object.
Referring to fig. 5, in the present embodiment, after the step of hoisting the preset object by the first rope 112, the hoisting method further includes:
s35: and conveying the preset object from the high altitude to the ground.
In summary, the working principle of the hoisting device 1 provided in this embodiment is as follows:
the free end of the second rope 122 is hung on the hook 13, and the second driving motor is started, so that the second winding drum 121 applies a pretightening force to the first rope 112 through the second rope 122. Then, the power of the first drive motor is increased, causing the first rope 112 to overcome the pretension and pull the second rope 122 upward. When the free end of the first string 112 is lifted to a position corresponding to the preset object, the second string 122 is separated from the second winding drum 121, and the first string 112 and the second string 122 tighten the preset object at the same time. Then, the first driving motor rotates reversely to transport the preset object from high altitude to the ground. Then, the second rope 122 is removed from the hook 13, and the second rope 122 is reinstalled on the second reel 121 to prepare for hoisting the next predetermined object.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. The hoisting equipment is characterized by comprising a first winch (11) and a pre-tightening device (12), wherein the first winch (11) comprises a first winding drum (111) and a first rope (112), the first rope (112) is wound on the first winding drum (111), the pre-tightening device (12) is connected with the first rope (112), and the pre-tightening device (12) is used for applying pre-tightening force to the first rope (112) before the first rope (112) hoists a preset object, and the pre-tightening force is the same as the direction of the load force of the preset object on the first rope (112).
2. Hoisting device as claimed in claim 1, characterized in that the pretensioning means (12) is a second winch, the pretensioning means (12) comprising a second drum (121) and a second rope (122), the second rope (122) being wound around the second drum (121), the free end of the second rope (122) being connected to the free end of the first rope (112), the second drum (121) being adapted to apply the pretensioning force to the first rope (112) via the second rope (122).
3. Hoisting device as claimed in claim 2, characterized in that the number of rope sections the second rope (122) is wound on the second drum (121) in the length direction of the second drum (121) is one or two.
4. Hoisting device as claimed in claim 2, characterized in that said second rope (122) is detachably connected to said second reel (121), said second rope (122) being intended to be fixed to said second reel (121) before said first rope (112) acts on said predetermined object; and the second rope (122) is used for being disengaged from the second reel (121) after the first rope (112) acts on the preset object.
5. Hoisting device as claimed in claim 2, characterized in that the hoisting device (1) further comprises a hook (13), the hook (13) being fixedly connected to the free end of the first rope (112), the free end of the second rope (122) being suspended from the hook (13).
6. Hoisting device as claimed in claim 2, characterized in that the hoisting device (1) further comprises a support table (14), the second drum (121) being rotatably connected to the support table (14).
7. Hoisting device as claimed in claim 2, characterized in that the second rope (122) is a fibre rope.
8. Hoisting device as claimed in any one of the claims 1-7, characterized in that the hoisting device (1) further comprises a hoisting trolley (15) and a spreader (16) connected to the hoisting trolley (15), the first reel (111) being rotatably connected to the hoisting trolley (15), the first rope (112) being connected to the spreader (16) and the first rope (112) extending in the same direction as the height of the spreader (16).
9. A hoisting method, characterized in that a hoisting device (1) according to any one of claims 1-8 is used, the hoisting method comprising:
causing the pretensioning device (12) to apply the pretensioning force to the first rope (112);
enabling the first rope (112) to hoist the preset object.
10. Hoisting method as claimed in claim 9, characterized in that between the step of causing the pretensioning means (12) to apply the pretensioning force to the first rope (112) and the step of causing the first rope (112) to hoist the pre-set object, the method further comprises:
and enabling the first winch (11) to apply driving force opposite to the direction of the pre-tightening force to the first rope (112) so as to enable the free end of the first rope (112) to ascend to the position corresponding to the preset object.
CN201911135294.8A 2019-11-19 2019-11-19 Hoisting apparatus and method Pending CN110844813A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911135294.8A CN110844813A (en) 2019-11-19 2019-11-19 Hoisting apparatus and method

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Application Number Priority Date Filing Date Title
CN201911135294.8A CN110844813A (en) 2019-11-19 2019-11-19 Hoisting apparatus and method

Publications (1)

Publication Number Publication Date
CN110844813A true CN110844813A (en) 2020-02-28

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204111228U (en) * 2014-10-08 2015-01-21 上海中联重科桩工机械有限公司 Hoisting rope pre-tightening apparatus and construction machinery and equipment device
CN105129634A (en) * 2015-08-12 2015-12-09 中联重科股份有限公司 Traveling mechanism for roof crane and crane
CN205838410U (en) * 2016-07-25 2016-12-28 河北大唐国际新能源有限公司 Blower fan hoisting mechanism
CN109095372A (en) * 2018-08-31 2018-12-28 中联重科股份有限公司 Winding device, cordage winding method and engineering machinery for cordage
US20190218077A1 (en) * 2018-01-17 2019-07-18 Maritime Developments Limited Rope maintenance system
CN110329937A (en) * 2019-07-10 2019-10-15 中联重科股份有限公司 Device and method and engineering machinery for auxiliary hoist elevator row's rope

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204111228U (en) * 2014-10-08 2015-01-21 上海中联重科桩工机械有限公司 Hoisting rope pre-tightening apparatus and construction machinery and equipment device
CN105129634A (en) * 2015-08-12 2015-12-09 中联重科股份有限公司 Traveling mechanism for roof crane and crane
CN205838410U (en) * 2016-07-25 2016-12-28 河北大唐国际新能源有限公司 Blower fan hoisting mechanism
US20190218077A1 (en) * 2018-01-17 2019-07-18 Maritime Developments Limited Rope maintenance system
CN109095372A (en) * 2018-08-31 2018-12-28 中联重科股份有限公司 Winding device, cordage winding method and engineering machinery for cordage
CN110329937A (en) * 2019-07-10 2019-10-15 中联重科股份有限公司 Device and method and engineering machinery for auxiliary hoist elevator row's rope

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